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| author | qianfan Zhao <qianfanguijin@163.com> | 2022-05-17 03:36:07 +0200 |
|---|---|---|
| committer | Jernej Skrabec <jernej.skrabec@gmail.com> | 2022-07-05 21:40:18 +0200 |
| commit | 7d655166dbb29b6d735b4699ded5d2b2d74d579c (patch) | |
| tree | 6af5d971cffed5f873fc916372e642c2bf96d6ae /arch/arm/boot/dts/sun8i-r40.dtsi | |
| parent | ARM: dts: sun8i-r40: add opp table for cpu (diff) | |
| download | linux-7d655166dbb29b6d735b4699ded5d2b2d74d579c.tar.xz linux-7d655166dbb29b6d735b4699ded5d2b2d74d579c.zip | |
ARM: dts: sun8i-r40: Add thermal trip points/cooling maps
For the trip points, I used values from the BSP code.
The critical trip point value is 30°C above the maximum recommended
ambient temperature (85°C) for the SoC from the datasheet, so there's
some headroom even at such a high ambient temperature.
Signed-off-by: qianfan Zhao <qianfanguijin@163.com>
Reviewed-by: Samuel Holland <samuel@sholland.org>
Tested-by: Samuel Holland <samuel@sholland.org>
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Link: https://lore.kernel.org/r/20220517013607.2252-4-qianfanguijin@163.com
Diffstat (limited to 'arch/arm/boot/dts/sun8i-r40.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/sun8i-r40.dtsi | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi index 88baaf6b0f41..4ef26d8f5340 100644 --- a/arch/arm/boot/dts/sun8i-r40.dtsi +++ b/arch/arm/boot/dts/sun8i-r40.dtsi @@ -87,6 +87,7 @@ reg = <0>; clocks = <&ccu CLK_CPU>; clock-names = "cpu"; + #cooling-cells = <2>; }; cpu1: cpu@1 { @@ -95,6 +96,7 @@ reg = <1>; clocks = <&ccu CLK_CPU>; clock-names = "cpu"; + #cooling-cells = <2>; }; cpu2: cpu@2 { @@ -103,6 +105,7 @@ reg = <2>; clocks = <&ccu CLK_CPU>; clock-names = "cpu"; + #cooling-cells = <2>; }; cpu3: cpu@3 { @@ -111,6 +114,7 @@ reg = <3>; clocks = <&ccu CLK_CPU>; clock-names = "cpu"; + #cooling-cells = <2>; }; }; @@ -126,6 +130,30 @@ polling-delay-passive = <0>; polling-delay = <0>; thermal-sensors = <&ths 0>; + + trips { + cpu_hot_trip: cpu-hot { + temperature = <80000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_very_hot_trip: cpu-very-hot { + temperature = <115000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + cpu-hot-limit { + trip = <&cpu_hot_trip>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; }; gpu_thermal: gpu-thermal { |